OpenSprinkler vs TM+ Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
OpenSprinkler
Control your OpenSprinkler irrigation system remotely. Monitor device status, modify watering schedules, and launch programs instantly. Features manual testing, multi-device support, and weather integration.
- Device status monitoring
- Program modification
- Instant program launch
- Manual testing mode
- Multi-device support
- Weather and forecast integration
- Log data visualization
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The application allows you to automatically detect and control your OpenSprinkler irrigation system(s). OpenSprinkler is an open-source Internet web-based sprinkler timer / controller built upon the Arduino platform. Features of the app include: * Easy to understand device status * Quick program modification * Launch ad-hoc or defined programs instantly * Manual mode for convenient testing * Multi-device support * View visual representation of upcoming scheduled programs * View graphical and tabulated representation of log data * View current weather and forecast status for the device location * Change and disable rain delay * Multiple supported languages (Afrikaans, Amharic, Chinese, Czech, Dutch, French, German, Hebrew, Hungarian, Italian, Mongolian, Norwegian, Polish, Portuguese, Slovak, Slovenian, Spanish and more) This application requires you to own an OpenSprinkler that is properly connected to your network. For more information please visit https://opensprinkler.com. You can control your device from outside the local network with proper port forwarding and use of the WAN IP within the application or by using a VPN. For further assistance please visit the forums: https://forums.opensprinkler.com This is open source software: source code for this application can be found at https://github.com/OpenSprinkler/OpenSprinkler-App
TM+ Pro
Remotely monitor and control horticulture automation systems for various growth facilities. Features include a new UI, historical charts, device customization, a logbook, and a community forum for growers to share insights and support.
- Remote access to control systems
- Historical data charting
- Customizable device display
- Plant logbook function
- Grower community forum
- Controller sharing
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TM+ Pro offers you remote access and control of the TrolMaster control systems: Green-X,Tent-X,Hydro-X,Hydro-X Pro,Hydro-X Plus, Aqua-X,Aqua-X Pro,Aqua-X Plus, Carbon-X and Hawkeye. The controllers and control systems provide the ultimate solution for horticulture automation, enabling you to monitor and control every aspect of your growth facilities anywhere, anytime. This new and advanced version is a major upgrade and improvement featuring: New UI: Clear and friendly user experience. Historical Chart: All historical data will be presented in one graph, making it easier to compare the data collected. New devices display customization: You can individually rename and add photos on all devices in the App for better management. New Logbook function: Allows you to track your plant stages, time and date. Log the plant data such as Environment and feeding parameters; plant information and room setup details. New Community page: Follow your favorite growers. Share your logbook and view other grower’s logbooks, a more user-friendly Forum. New Support page: Featuring “Product Learning” “Help” page with FAQ and Q&A. Forum: You can also share, like, comment, and post questions or any thoughts in Community, a place where growers can share ideas and grow together. Sharing controller: Owner can share his controllers with other user accounts. Giving the ability to authorize multiple accounts to access the same controller.
Screenshots
Verdict
The clearest difference is rating: OpenSprinkler at 3.9 against TM+ Pro's 3.1. OpenSprinkler also leads on review sentiment (65% vs 32%). TM+ Pro's advantage is ratings volume (100 vs 29). On price, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
OpenSprinkler holds the better App Store score, 3.9 against 3.1. Both are backed by a comparable volume of ratings — 29 and 100 respectively. Written reviews point the same way: 65% of OpenSprinkler's written reviews are positive against 32% of TM+ Pro's.
OpenSprinkler ships an update every 2 months, TM+ Pro every 5 weeks. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | OpenSprinkler | TM+ Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (29 ratings) — better | 3.1 (100 ratings) |
| Positive reviews | 64.8% of reviews — better | 32.4% of reviews |
| Number of ratings | 29 | 100 — better |
| Update frequency | Every 2 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 | 15.0 |
| Further details — not scored | ||
| Size | 8 MB | 105 MB |
| Age rating | 4+ | 17+ |
| Developer | OpenThings | TrolMaster Agro Instruments Co., Limited |
Customer experience
OpenSprinkler
TM+ Pro
User reviews
OpenSprinkler
From 29 App Store ratingsWhat we love
- 👍 Reliable and easy to use
- 💡 Open API for customization
- 🚀 Works great with hardware
- 👍 Great companion app
- 👍 Well-designed interface
Room to improve
- 🐛 Crashes and fails to connect
- 🐛 Wi-Fi only interaction is a hinder
- 🐛 Slow app refresh/updates
- 🐛 Incompatible with VoiceOver
- 🐛 Loses settings on updates
TM+ Pro
From 100 App Store ratingsWhat we love
- 👍 Simple and works
- 👍 Prompt and human support
- 👍 Hardware and sensors are solid
- 👍 Pretty easy to use
- 👍 System works great
Room to improve
- 🐛 App is trash
- 🐛 Wonky performance
- 🐛 Subpar accuracy
- 🐛 Times out all the time
- 🐛 Not user friendly
Bugs and requests
OpenSprinkler
Reported bugs
20 issues- No network connectivity after update
- Constantly crashes and fails to connect
- App refreshes and updates super slow
- Incompatible with VoiceOver, cannot edit/create programs
- App cannot connect or discover OpenSprinkler 1.8.3 after update
Show 15 moreShow fewer
- Update deleted OS sites and required new login
- Loses settings on app updates
- Won't connect to controller, but works in browser
- Requires VPN to log in remotely
- Screen doesn't refresh after changes, requires app restart
- App crashes when taking a picture to assign to a zone
- Resume after phone lock causes freeze, requires app restart
- Weather location always displays as '11, Tottori-ken'
- Hardware unit loses power randomly and reboots
- App adds additional programs to the end of the list
- Clock/GMT feature crashes app and reverts to default
- Latest update broke connection with early build units (FW 1.8.3)
- Update crashed OpenSprinkler, router can't find units
- Firmware update wipes out config
- Resume on iPhone 7 doesn't work, requires force quit
Requested features
9 requests- Add Apple Watch support
- Indicate % water level with weather forecasts
- Fix VoiceOver compatibility for editing/creating programs
- Improve UI, follow iPhone standards
- Add logging support to the app
Show 4 moreShow fewer
- Support for older firmware versions (1.8.3)
- Fix DHCP/static IP bug
- Add temperature display to home screen
- Fix resume issue on iPhone
TM+ Pro
Reported bugs
17 issues- Version is wrong, cannot use
- App times out frequently
- Master controller turns light off/on
- Historical data timestamps not chronological
- App won't show devices after update
Show 12 moreShow fewer
- Schedule page data entry fields are buggy
- Cannot add software after update
- App cannot display data
- App doesn't refresh without re-selecting controller
- Cannot control devices from app
- App crashes often
- App doesn't update with real-time readings
- History graphs poorly scale data
- Difficult to scroll zoomed graphs
- VPD data rounded
- Takes long for data to refresh
- Issues with verifying email
Requested features
5 requests- Add indication for port status
- Improve historical data display
- Allow settings changes through app
- Faster AVG parameter updates
- More online info for new units
In-app purchases
OpenSprinkler
No in-app purchases
TM+ Pro
No in-app purchases








